Contact us PLEASE CONTACT OUR SALES TEAM! This item needs to be checked, as the mechatronics hardware and software should match to your transmission! For this, inform us about the main part list number and serial code. These details are mentioned on the transmission itself (sticker and/or plate). Example of the needed codes: The use of incorrect fluid may cause damage to internal parts. ZF will not accept any warranty unless the correct specifications ZF Lifeguard oil is used. Please carefully read the instructions for returning your core in the ZF Return Policy .